WebNXのサポートから次のようなメールが来ました(^^ゞ
Your a perfect candidate for a dedicated server if your budget grows. That mono application you use is very cpu intense and will probably die at a larger load since its maxing your cpu allocation constantly. You might want to check your users and see if you can find a way to make them more profitable since the current usage wont scale very well.
いやー、その前にインストールを完成しないと。完成してユーザが押し寄せても専用サーバを借りるようなお金はでてこない・・・。